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Dvinal [7]
3 years ago
13

Hey can anyone pls answer dis rq!

Physics
1 answer:
aivan3 [116]3 years ago
4 0

Answer:

9- reactants are heated,       10- third option

Explanation:

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What acceleration does the force of earth's gravity peoduce
maksim [4K]
Near Earth's surface, gravitational acceleration is approximately 9.81 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.81 metres per second every second.
8 0
3 years ago
A student tosses a ball horizontally from a balcony to a friend 3.8 meters down below them. How long does the ball take to reach
Vsevolod [243]

Answer:

The time it takes the ball to fall 3.8 meters to friend below is approximately 0.88 seconds

Explanation:

The height from which the student tosses the ball to a friend, h = 3.8 meters above the friend

The direction in which the student tosses the ball = The horizontal direction

Given that the ball is tossed in the horizontal direction, and not the vertical direction, the initial vertical component of the velocity of the ball = 0

The equation of the vertical motion of the ball can therefore, be represented by the free fall equation as follows;

h = 1/2 × g × t²

Where;

g = The acceleration due gravity of the ball = 9.81 m/s²

t = The time of motion to cover height, h

Then height is already given as h = 3.8 m

Substituting gives;

3.8 = 1/2 × 9.81 × t²

t² = 3.8/(1/2 × 9.81) ≈ 0.775 s²

∴ t = √0.775 ≈ 0.88 seconds

The time it takes the ball to fall 3.8 meters to friend below is t ≈ 0.88 seconds.

8 0
3 years ago
2. What is the speed of a car that travels 73.4 kilometers (km) in 5 hours?
maksim [4K]
Speed =dist./time
=73.4/5
=14.68 km/hr
7 0
3 years ago
Read 2 more answers
In a string of lights, if one light goes out and the others stay lit, which type of circuit do you have?
zepelin [54]
You have a parallel circuit since it allows the electrons to travel in 2 paths, allowing the other light to stay lit.
3 0
4 years ago
Read 2 more answers
HELP HELP..................... ​
tatiyna

Hi,

Your question is "which graph represents uniform motion", the answer would be option 1

Have a good one!

6 0
4 years ago
Read 2 more answers
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